On Sunday's "The Walking Dead," Negan picked up a mystery hitchhiker on his way back to the Sanctuary.

Who did he pick up?

The answer seemed pretty obvious to us originally, but after AMC released a series of new photos from the next episode we're torn between two logical answers.

Keep reading to see the most likely candidates Negan picked up along with one zany fan theory on who his passenger may be.

1/

1. It's Savior Laura.

Laura was not happy when she found out Dwight was the man who betrayed the Saviors.
Gene Page/AMC

Dwight wasn't the only Savior who survived the fallout at Alexandria.

Laura watched Dwight mercilessly kill some of the members of their group before she fled for the Sanctuary.

Why it's likely: As far as we know, the tattooed Savior is still lost out in the woods trying to find her way home.

Before Dwight went back to the Sanctuary, he asked a few of the Saviors if she was found. He knows the moment she returns that she's going to out him for double-crossing Negan. At that point, there's no point in him pretending he's still on Negan's side.

Finding Laura would be an added bonus for Negan who already has a bone to pick with Simon for ordering the slaughter of Jadis' entire group.

2/

2. It's Gregory.

We're sure Gregory's up to no good.
Gene Page/AMC

Gregory escaped with the other members of the Sanctuary from the Hilltop. While Rick and Morgan stumbled upon the runaways on last Sunday's episode, Gregory was nowhere to be found.

"Watching Gimple fire my son 2 weeks before his 18th birthday after telling him they wanted him for the next 3 years was disappointing," wrote Riggs back in December. "I never trusted Gimple or AMC, but Chandler did."

Plus, Negan's reaction would have been a bit more shocking if he saw Rick's son back from the dead. He loved that kid.